Wrench.



P. LIGHT.

WRENCH.

APPLICATION FILED APR.16, 1909.

Patented Oct. 5, 1909.

FRED LIGHT, OF TRAVERSE CITY, MICHIGAN.

WRENCH.

' Specification of Letters Patent.

Patented Oct. 5,1909.

Application filed April 16, 1909. Serial No. 490,259.

To all whom it may concern:

Be it known that I, FRED LIGHT, a citizen of the United States, residingat Traverse City, in the county of Grand Traverse and State of Michigan,have invented a new and useful rench, of which the following is aspecification.

This invention relates to improvements in monkey-wrenches andparticularly to that class commonly known as quick-acting Wrenches.

The invention has for its object to provide a wrench of the characterdescribed in which means are provided for quickly adjusting a movablejaw to any desired position, and also means for holding the jaw in thatposition while engaging a nut or any other article.

The invention comprises a relatively stationary jaw, a movable jawslidably mounted 011 the shank of said stationary jaw, a handle pivotedto the lower end of said shank, and a spring pressed pawl, one endthereof being pivoted to the handle and the other end adapted to engageand retain the movable jaw in various positions.

In the drawings, Figure 1 is a perspective view of the wrench. Fig. 2 isa longitudinal sectional view of the same. Fig. 3 is a detail sectionalview taken on the line 33 of Fig. 2. Fig. 4 is a detail sectional viewtaken on the line t4 of Fig. 2.

Like figures designate corresponding parts in all of the drawings.

Referring to the drawings, 1 designates a handle having an opening 2which extends nearly the whole length of said handle for the purpose ofdecreasing the weight of said handle. The upper or inner end of thebandle is bifurcated to form upstanding ears 3 and 3 respectively. Theseears are of greater width than the handle, and are provided with alinedopenings 4: and P respectively to form bearings for the bolts or rivets5 and 5 respectively, the purpose of which will be hereinafter morefully described. Arranged between and pivoted to the said cars by meansof the bolt 5, is a shank 6 having on its upper or outer end a fixed jaw7 of the usual construction.

The invention further comprises a movable jaw consisting of an uppermember 8 and a lower member 9 which are spaced apart and integrallyconnected by means of a central transverse barlO. Each of the withalined openings 11 and 12 in which is arranged the shank 6 of therelatively fixed jaw 7, the said openings being arranged adjacent to thebar 10. The end of the lower member opposite the opening 12, isbifurrated to form spaced arms 9 and 9 respectively, the ends of whichare respectively connected to the upper member 8 by the bars 13 and 13,which are spaced from the bar 10 to form side openings 14 and 14?. Thesaid transverse bar 10 extends between walls of the lower member 9 andis provided on its outer face with a series of teeth 15. A pawl 16,having a length greater than half the length of the shank 6, is alsoarranged between the ears 3 and 3 of the handle, and is pivoted thereonby means of the bolt 5 The pawl is provided with an outwardly curvedthumb-piece 17 which extends downwardly ashort distance over thehandle 1. The inner edge of the pawl is provided with a series of teeth18 which are adapted to engage the teeth 15 of the movable jaw. A flatspring 19 is secured to the .upper member 8 by a screw 20 or othersuitbears against the outer side 21 of the pawl 16, to normally hold thepawl in engagement with the teeth 15 of the movable jaw. The upper orinner end of the pawl is provided with an outstanding transversestop-pin 22 which is adapted to enter a slot 23 located in the innerside of the lower member 9 of the movable jaw. The inner surfaces of thearms 13 and 13f as well as the arms 9 and 9 are inclined in such amanner that the lower portion of each of said arms is of greater crosssectional area than the upper portion thereof. This construction willpermit of a stop-pin 22 being moved between the spaced arms 13 and 13whenever it is desired to disengage the pawl from the movable jaw; butwhen the movable jaw is in its uppermost position the pin 22 will enterthe slot 23, which being limited in depth, will prevent the movable jawfrom becoming detached from the pawl. The slot is also of sufficientwidth to permit a lateral movement of the pin whenever it is desired todisengage the pawl from the teeth of the movable jaw. The upper member 8is provided on its under side and directly above the pawl with a cut-outportion 24 which will permit of the movable jaw being spaced members 8and 9 are respectively provided a greater distance from the fixed jaw.

on which the -pawl is arranged.

It will be evident from referring to Fig. 2 of the drawings that bybearing on the thumb-piece 17 of the pawl 16, the pawl will be forcedout of engagement from the movable aw, which will then permit the saidjaw to be adjusted as desired upon the shank 6 of the relatively fixedjaw. When the movable jaw has been properly posi- 'tioned, thethumb-piece is released, and the spring 19 will throw the pawl intoengagement with the movable jaw and thereby hold the same in thatposition.

movable jaw and is pivoted to the handle,

forces the said jaw tightly against the nut or whatever article is beingoperated upon. To release the movable jaw from the nut, it

"is necessary to swing'the handle back to its normal pos1t1on,sa1dmovement causing the movable aw to recede fromthe article.

Fromthe foregoing, it-is thought that the construction, operation andmany advantages of the herein described invention will be apparent'tothose skilled inthe art, without further description, and it will beunderstood that various changes in the size, shape, proportion and minordetails of con str'uction, may be resorted to without departing'from'thespirit or sacrificing any of the advantages of the invention.

WVhat I claim is 1. In a wrench, the combination with a handle havingspaced longitudinal ears formed at'one end thereof, and 'havmg aplurality of spaced and alined openings formed therein, of a relativelyfixed jaw arranged between the said ears and pivoted thereto by atransverse bearing which is arranged in one pair of the alined openings,a

movable aw slidably mounted on the shank ofthe fixed"jaw above thehandle and provided with a cut-out portion, and a pawl pivoted betweenthe ears of the handle by a transverse bearing which'is arranged in theother pair of alined openings thereof, one

end of the pawl extending into the cut-out portion and engaging themovable jaw, and the other end thereof terminating 1n an extendedfinger-piece.

2. In a wrench, the combination with a handle having spaced longitudinalears formed at one end thereof and having a plurality of spaced andalined openings formed therein, of a relatively fixed jaw arrangedbetween the said ears and pivoted thereto by a transverse bearing whichis arranged in one pair of the alined openings, a movable jaw slidablymounted on the shank of the relatively fixed jaw above the handle andprovided with a cut-out portion, a pawl pivoted between the ears of thehandle by means of a transverse bearing which is arranged in the otherpair of alined openings thereof, said pawl extending along the shank ofthe relatively fixed jaw in a substantially parallel relation thereto,one end of the pawl extending into the said cut-out portion and engagingthe movable aw and the other end terminating in an extendedfinger-piece, and

means carried by the end of the pawl for engaging the movable jaw forlimiting the movement of the said aw and also preventing the said pawlfrom becoming disengaged from the said jaw.

3. In a wrench, the combination with a handle having spaced longitudinalears formed at one end thereof, and having a plurality of spaced andalined openings formed therein, of a relatively fixed jaw, one end ofthe shank thereof being arranged between the said ears and pivotedthereto by a transverse bearing which is arranged in one pair of thealined openings of the ears, a movable jaw slidably mounted on the shankof the relatively fixed jaw, and consisting of upper and lower memberswhich are spaced apart andintegrally connected by a centrally arrangedtransverse bar which extends down to the bottom of the lower member, andis provided on its outer side with a plurality ofteeth, a pawl pivotallyconnected to the handle by means of a transverse bearing which isarranged in the other pair of alined openings of the ears, said pawlbeing spaced from but substantially parallel to the shank of the fixedjaw and provided on its inner side with a plurality of teeth which areadapted to engage the teeth of the movable jaw and thereby retain thesaid jaw in position, an inwardly extending spring secured to themovable jaw and adapted tobear against the outer face of the pawl tonormally hold the said pawl into engagement with the said jaw, and athumb-piece integral with the pawl and extending outwardly over thehandle, said thumb-piece being adapted to act as a lever for the pawland thereby disengage the pawl from the movable aw.

4. In a wrench, the combination with a handle having spaced longitudinalears formed-at one end thereof, and having a plurality of spaced andalined openings the shank of the relatively fixed aw, and consisting ofupper and lower members which are spaced apart and integrally connectedby a centrally arranged transverse bar, which extends down to the bottomof the lower member and is provided on its outer side with a pluralityof teeth, the end of the lower member being bifurcated to form spacedarms which are connected at their respective ends to the upper member bytapered arms, and a slot located in one of the spaced arms, a pawlpivotally connected to the handle by means 01 a transverse bearing whichis arranged in the other pair of alined openings of the ears, said pawlbe ing spaced from but substantially parallel to the shank of the fixedjaw and provided on its inner side with a plurality of teeth which areadapted to engage the teeth of the movable jaw and thereby retain thesaid jaw in position, a stop-pin secured on the end of the pawl andadapted to enter the slot in the lower member of the movable jaw, andthereby prevent the said jaw from becoming disengaged from the pawl,said slot being of a suflicient width to permit the pawl beingdisengaged from the teeth of the jaw.

In testimony, that I claim the foregoing as my own, I have heretoaiiixed my signature in the presence of two witnesses.

FRED LIGHT. Vitnesses:

OTTO KYsELKA, C. D. LA POINTE.

